Abstract
To assist intervention developers assess the likely effectiveness of messages designed to encourage greater use of protective behavioral strategies, this study developed and tested the Alcohol Message Perceived Effectiveness Scale (AMPES). Recommendations from the message effectiveness literature were used to guide AMPES development. The resulting scale was administered in online surveys at two time points to Australian drinkers aged 18–70 years (3001 at Time 1 and 1749 at Time 2). An exploratory factor analysis identified the presence of two factors (‘effect perceptions’ and ‘message perceptions’) that accounted for 71% of the variance in scores. Internal consistency of scores was good for the overall scale (ω = 0.83) and ‘effect perceptions’ factor (ω = 0.85), but suboptimal for the ‘message perceptions’ factor (α = 0.60). Scores on both factors significantly predicted enactment of protective behavioral strategies. The AMPES appears to be an appropriate tool to assess perceived message effectiveness and assist in the development of public health messages designed to reduce alcohol consumption.
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